Laserfiche WebLink
1 c/� <br /> WELL CONSTRUCTION REPORT AND QUARTERLY MONITORING REPORT <br /> FORMER DIAMOND LUMBER- MANTECA <br /> AUGUST,1996 <br /> • Analyze water samples for total petroleum hydrocarbons as gasoline (TPH G) and <br /> benzene, toluene, ethylbenzene, and total xylenes (BTEX), and total lead using <br /> EPA Methods 8015 Modified, 8020 and 7421,respectively <br /> • Prepare this Well Construction Report and Quarterly Groundwater Monitoring <br /> Report for presentation to the County <br /> The County was notified that the sampling dates were April 12, 1996 and June 12, 1996 Ms <br /> Margaret Lagono from the County was present to observe the sampling <br /> 3.1 Permitting <br /> rWell permits were obtained from the County for MW-7-P and MW-8-P An agreement for right- <br /> of-way access was obtained from the SP Transportation Department. <br /> 3.2 Underground Utility Survey <br /> Prior to conducting any subsurface investigations, Underground Service Alert was notified to <br /> locate any underground utilities in the vicinity of the wells A fiber-optic utility survey was also <br /> conducted This information was used to assess potential drilling obstructions beneath the site <br /> 3.3 Safety Plan <br /> A site specific Site Safety Plan (SSP) was developed by Park to nunimnze the potential for <br /> accidents and for potential exposure to dangerous chenucals, as well as to identify the nearest <br /> ' emergency medical facility A copy of the SSP is contained in Appendix A and was present on <br /> site during all field activities <br /> 3.4 Well Construction <br /> Two groundwater monitoring wells were installed at the locations shown on Figure 2 The wells <br /> were advanced using a CME-75 truck mounted hollow stem auger drill ng operated by Spectrum <br /> Drilling The borings were drilled using 10-inch diameter hollow stem augers The augers were <br /> steam cleaned between bonngs to reduce the potential for cross contamination between wells <br /> The borings were drilled to a depth of approximately 30-feet bgs The lithology and other <br /> pertinent data were recorded on the field boring logs, which are included in Appendix B <br /> Soil cuttings from the bonngs were contained in Department of Transportation (DOT) approved <br /> 55-gallon drums and labeled accordingly Cuttings were left on-site pending results of laboratory <br /> analysis to select an appropriate disposal option <br /> Monitoring wells MW-7-P and MW-8-P were completed with 4-inch, flush threaded, Schedule 40 <br /> PVC slotted casing from 8 to 30-feet, and blank casing from 8-feet to the top of casing (TOC) <br /> r2 <br />